JPS6284220U - - Google Patents
Info
- Publication number
- JPS6284220U JPS6284220U JP17520285U JP17520285U JPS6284220U JP S6284220 U JPS6284220 U JP S6284220U JP 17520285 U JP17520285 U JP 17520285U JP 17520285 U JP17520285 U JP 17520285U JP S6284220 U JPS6284220 U JP S6284220U
- Authority
- JP
- Japan
- Prior art keywords
- matching circuit
- effect transistor
- terminal
- field
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005669 field effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Description
第１図はこの考案の一実施例による高周波増幅
器の等価回路図、第２図はこの考案の他の実施例
を示す高周波増幅器の等価回路図、第３図は従来
の高周波増幅器の等価回路図である。
１はトランジスタ、２は入力整合回路、３は出
力整合回路、４は入力端子、５は出力端子、７は
キヤパシタ、８は高周波チヨークコイル、１０は
バイアス端子、１１は電界効果トランジスタ、１
２はソース端子、１３はドレイン端子、１４はゲ
ート端子である。なお、図中、同一符号は同一、
又は相当部分を示す。
Fig. 1 is an equivalent circuit diagram of a high frequency amplifier according to one embodiment of this invention, Fig. 2 is an equivalent circuit diagram of a high frequency amplifier showing another embodiment of this invention, and Fig. 3 is an equivalent circuit diagram of a conventional high frequency amplifier. It is. 1 is a transistor, 2 is an input matching circuit, 3 is an output matching circuit, 4 is an input terminal, 5 is an output terminal, 7 is a capacitor, 8 is a high frequency choke coil, 10 is a bias terminal, 11 is a field effect transistor, 1
2 is a source terminal, 13 is a drain terminal, and 14 is a gate terminal. In addition, in the figure, the same reference numerals are the same,
or a corresponding portion.
Claims (1)
れ入力整合回路、出力整合回路を設け、上記入力
整合回路に直列に可変抵抗素子を接続して成る高
周波増幅器において、上記可変抵抗素子としてド
レイン端子とソース端子間に高周波チヨークコイ
ルを設けた電界効果トランジスタを用い、かつ、
上記電界効果トランジスタのゲート端子に印加す
る直流バイアス電圧を可変させることにより、上
記電界効果トランジスタの上記ドレイン端子・ソ
ース端子間チヤネル抵抗値を可変できる機構を有
することを特徴とする高周波増幅器。 In a high-frequency amplifier in which an input matching circuit and an output matching circuit are provided at the input and output terminals of an amplifier element such as a transistor, and a variable resistance element is connected in series to the input matching circuit, a drain terminal and a source terminal are used as the variable resistance element. Using a field effect transistor with a high frequency chiyoke coil between them, and
A high-frequency amplifier characterized by having a mechanism that can vary the channel resistance value between the drain terminal and the source terminal of the field-effect transistor by varying the DC bias voltage applied to the gate terminal of the field-effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17520285U JPS6284220U (en) | 1985-11-14 | 1985-11-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17520285U JPS6284220U (en) | 1985-11-14 | 1985-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6284220U true JPS6284220U (en) | 1987-05-29 |
Family
ID=31114304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17520285U Pending JPS6284220U (en) | 1985-11-14 | 1985-11-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6284220U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5136428U (en) * | 1974-09-11 | 1976-03-18 | ||
| JPS5114548B1 (en) * | 1970-11-02 | 1976-05-10 |
-
1985
- 1985-11-14 JP JP17520285U patent/JPS6284220U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5114548B1 (en) * | 1970-11-02 | 1976-05-10 | ||
| JPS5136428U (en) * | 1974-09-11 | 1976-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6284220U (en) | ||
| JPH0540575Y2 (en) | ||
| JPS6217223U (en) | ||
| JPS62191216U (en) | ||
| JPS6238332Y2 (en) | ||
| JPS62151221U (en) | ||
| JPH0186477U (en) | ||
| JPH02103914U (en) | ||
| JPH0478825U (en) | ||
| JP3153970B2 (en) | Single balance mixer circuit | |
| JPS63107065U (en) | ||
| JPH0466612U (en) | ||
| JPH02100329U (en) | ||
| JPS5873620U (en) | variable gain amplifier | |
| JPH0232221U (en) | ||
| JPS6397916U (en) | ||
| JPH02123114U (en) | ||
| JPS60139326U (en) | High frequency signal amplification circuit | |
| JPS6214818U (en) | ||
| JPS6415415U (en) | ||
| JPS59195824U (en) | gain control circuit | |
| JPS6261528U (en) | ||
| JPS6383811U (en) | ||
| JPS60119122U (en) | power amplifier | |
| JPS62125017U (en) |